Combined latch and lock



(ModeL) '2 Sheets-Sheet 2.

J. .B. HUTSON.

COMBINED LATCH AND LOOK. No. 343,376. Patented June 8, 1886.

WITNESSES: b INVENTOR:

345W Q T ATTOR s.

-key or knob-nut.

UNITED STATES PATENT OFFICE.

JOSHUA l3. HUTSON, OF RLCHMOND, VIRGINIA.

COMBINED LATCH AND LOCK.

SPECIFICATION forming part of Letters Patent No. 343,376, dated June 8,1886,,

Application filed March 2, 1886. Serial No. 193,732. (Model) To all whomit may concern:

Be it known that I, JOSHUA B. HUTSON, of Richmond, in the county ofHenrico and State of Virginia, have invented a new and usefulImprovement in Combined Latches and Locks, of which the following is aspecification, reference being had to the annexed drawings, forming apart thereof, in which Figure l is a side elevation with the coverremoved showing the parts of the lock in position to be operated by theknob-nut. Fig. 2 is a side elevation'with the cover removed showing thebolt withdrawn by the knob-nut. Fig. 3 is a side elevation with thecover removed showing the parts arranged to be operated by a latch-key.Fig. 4 is a side elevation with the cover removed showing the boltwithdrawn by the latch-key. Fig. 5 is a side elevation with the coverremoved showing the unlocking mechanism secured so as to prevent theunlocking of the bolt by means of the latch- Fig. 6 is an end elevation.Fig. 7 is a longitudinal section taken on line 00 x in Fig. 5. Fig. 8 isafront elevation of a frame, through the medium of which the bolt isoperated by means of the key or knob-nut. Fig. 9 is an edge view. Fig.10 is a rear,elevation of the same. Fig. 11 is a detail perspective viewof the cam-key and the key. Fig. 12 is a detail perspective view of thelatch for controlling the locking and unlocking of the bolt. Fig. 13 isa detail perspective View of the knob-nut. Fig. l l isadetailperspective view of thebolt.

Similar letters of reference indicate corresponding parts in thedifferent figures of the drawings.

My present invention is an improvement on the locking-latch for whichLetters Patent No. 269,421 were issued tome December 19, 1882.

The object of my invention is to simplify the lock and render it moreefficient.

My invention consists in the combination, with the sliding bolt of thelock. of a sliding frame intermediate between the knob-nut and key andthe bolt of the lock, and in means for locking the sliding frame toprevent it from being moved by the knob-nut or key, while permitting ofthe free movement of the bolt independently of the sliding frame andparts connected therewith, as hereinafter more fully described.

To the case A,which is rectangular in crosssection, is fitted a bolt,13, which projects through the face-plate of the lock and is guided bythe sides of the case; and in the faceplate is journaled a roller, a,for receiving the pressure of the bolt when the bolt comes into contactwith the striker. The bolt B has its outer end beveled in the usual way,and the inner end is formed of two parallel prongs, b b,of unequallength, the prong bbeingshorter than the prong I), both prongs beingprovided with lugs c.

To the space between the prongs b b is fitted a frame, O,which isslotted longitudinally, and provided with shoulders d, above the prongsb, and in position to be engaged by the knob-nut D,which is journaled inthe sides of the lock-casing, and is provided with arms e, for engagingthe shoulders (I.

In'opposite edges of the frame 0 are formed rectangular notches f f, forreceiving thelugs c c of the prongs b b of the bolt, shoulders g beingformed at the ends of the notches for engaging the lugs c. The frame 0is grooved transversely across its wider face, forming a space forreceiving the keycam E, which is journaled in the sides of thelock-casing, and is adapted to engage ledges h h upon opposite sides ofthe groove, for moving the frame 0, or looking it, as hereinafter morefully described.

A spiral spring, i, received on a stud, j, in the back of thelock-casing, and having arms k Z, is employed to press the bolt Bforward, the arm 70 of the spring resting between the lug m in thelock-casing and the key-cam E. This arrangement of the spring preventsthe key-nut from being turned, except by the key adapted to it. It alsoprevents the key-nut from accidentally getting out of place.

Upon the face of the frame 0, at its outer extremity, is formed asemi-cylindrical lug, n, and upon the frame 0 and the prongs b b of thebolt 13 is loosely placed a plate, F. Beyond the end of the frame 0, andwithin the end of the bolt and lock-casing is j ournaled a latch, G,formed of a nut, 0, having arms p q of equal length projecting inopposite directions from the nut, the arm 1; being of about the samethickness as the plate F, and adapted to engage the edge of the plate Fwhen the arms are turned parallel with the lock-casing, and from theunder surface of the arm 1 a lug, 0, projects in position to engage thelug n,pro jecting from the frame G,when it is desired to prevent thelock from being operated by the key-cam E or the knob uut D. A spindle,s, which is provided with a squared end, having a tongue formed on oneside thereof, is received in the square aperture of the latch G, thetongue upon the spindle 8 being received in a groove in the side of thehole in the latch to cause the thumb-piece t of the spindle to registerwith the armsp q of the latch. The key-cam E is slotted to receive thekey H, and is provided with a ward, n, or arranged in any other suitableway to prevent it from being turned by any other key but the onebelonging to the lock. The key is provided with a notched end to receivethe ward, and has armsawhich are received in slots w in the lock-casingat the side of the opening in which the key-cam E turns; \Vhen the keyisinserted in the lock, one of the arms 12 pushes the arm 7c of the springI beyond the lug m, permitting the a turning of the key-nut. \Vhen thekey is removed, the spring-arm k regains its normal position between thelug m and the key-cam E.

All the parts of myimproved lock are held in place by the cover which issecured to the lock-casing by a screw, y, which passes through the coverand enters a boss, z, in the opposite side of the lock'casing.

With the part-s of the lock in the position shown in Fig. 1, the bolt Bis free to be forced into the look by the engagement of its beveled endwith the striker on the door-jamb. It will be pushed in against thepressure of the arm Z of the spring, and when it passes the edge of thestriker the spring will project the bolt into the mortise in thedoo1'-janib,and the door will be latched, and it can be uulatched byturning the knob-nut D, by means of the knob or spindle receivedtherein, or by turning the key-cam E, as shown in Fig. 2.

\Vhen it is desired to arrange the lock to be opened by the key alone,the knob-nut D is secured by turning the latch G, so as to bring the armp against the edge of the plate F and hold the plate in contact with theknob-nut, as shown Fig. 3. The bolt B is still free to be pressed inwardin the operation of closing, as before described, but the knob-nut Dwill be prevented from turning by the engagement with it of the plate F;but the key-cam E may be turned by the employment of the key, as shownin Fig. 4, so as to withdraw the bolt B.

When the parts are in the position indicated in Fig. 3, the frame (Jwill be locked by turning the key-cam E through one-quarter of arevolution, bringing it into engagement with the ledge h. By means ofthis arrangement the bolt is secured, so that it cannot be moved fromthe inside of a door. This is often advantageous in buildings where apart of the rooms are vacant and in stores self unoccupied.

\Vhen it is desired to arrange the lock from the inner side of a door sothat the frame 0 and the bolt B cannot be moved by means of the key-camor the knob-nut, the latch G is turned so as to bring the lug 0* intoengagement with the lug n on the frame 0, as shown in Figs. 5 and 7.This will hold the frame so that it cannot be moved by the knob-nut orkey, but will not in any way interfere with the free movement of thebolt when the door is being closed.

To indicate the position of the latch-key, I have formed a hole, a, inthe head i of the spindle .9.

By my improvement I produce a self-locking spring-lock, with one strongbolt, which answers all the purposes for which a doorlock is required.It acts as a knob 1 latch, spring-lock, key-lock, and a night-latch. Thebolt under all circumstances is in condition to move freely backwardinto the lock, thus avoiding the danger of breakage from slamming thedoor. There being no key-hole through the lock, perfect privacy isinsured.

My improved lock requires but one spring, and is therefore less liableto derangement than other locks requiring a numberpf springs. The rolleragainst which the bolt presses when the door is being closed, reducesthe friction of the bolt and I( n'lers the action of the look easy andnoiseless.

The lock can be used without any change for a right and left hand door,and the key may be inserted either side up, and may be turned in eitherdirection to unlock the door. The lock being very narrow, does notrequire the cutting away and consequent weakening of the door.

Having thus described myinvention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a lock, the combination, with the bolt B, provided with the prongsb I), having lugs a formed thereon, of the sliding frame 0, providedwith shoulders 5/ g for engaging the lugs c, and having the ledges h h,the key-cam E, adapted to engage the ledges h h, and the spring 17,adapted to press the boltB outward, substantially as herein shown anddescribed.

2. The combination, in a lock, of the bolt B, provided with the prongsI) I), having lugs 0 formed on the ends thereof, the frame 0, havingshoulders (I g and ledges h h, the keycam E and the knob-nut D,substantially as herein shown and described.

3. The combination, with the bolt B, having the prongs b b, with lugs aformed on the ends thereof, the frame 0, provided with shoulders d g,and the knob-nut 1),provided with arms 0, of the plate F, and latch G,adapted to hold the plate in engagement with the knobnut, substantiallyas herein shown and described.

4. The combination of the bolt B, provided with the prongs b b, theframe G, having shoulinner end ofthe bolt, the key-cam E, the knobnut D,provided with arms 0, the plate F, the latch G, provided with the arm19, and the arm q, having the lug 1", substantially as herein shown anddescribed.

JOSHUA B. HUTSON.

Witnesses:

J ULIUs STRAUS, H. O. JOHNSTON.

